Black tie doesnt have to mean floor length, especially if youre on the shorter side. Dont be afraid of a hemline that sits below the knee it can still be completely black tie appropriate when the Trixxi Women's Juniors Black Dress Long Sleeve Below Knee Length Layered Front Lafayette 148 New York Silk Blend Pleated Cap Sleeve Below Knee Dress Black Knee Length Dresses Banana Republic Factory Daring Diva Mock Neck Knit Below the Knee Tie Waist Dress XS Black